wip: code formatting nits continued

test/differenceWith.spec.js

@@ -0,0 +1,28 @@
+import lodashStable from 'lodash';
+import { LARGE_ARRAY_SIZE, stubOne } from './utils';
+import differenceWith from '../src/differenceWith';
+
+describe('differenceWith', () => {
+    it('should work with a `comparator`', () => {
+        const objects = [
+            { x: 1, y: 2 },
+            { x: 2, y: 1 },
+        ];
+        const actual = differenceWith(objects, [{ x: 1, y: 2 }], lodashStable.isEqual);
+
+        expect(actual).toEqual([objects[1]]);
+    });
+
+    it('should preserve the sign of `0`', () => {
+        const array = [-0, 1];
+        const largeArray = lodashStable.times(LARGE_ARRAY_SIZE, stubOne);
+        const others = [[1], largeArray];
+        const expected = lodashStable.map(others, lodashStable.constant(['-0']));
+
+        const actual = lodashStable.map(others, (other) =>
+            lodashStable.map(differenceWith(array, other, lodashStable.eq), lodashStable.toString),
+        );
+
+        expect(actual).toEqual(expected);
+    });
+});